Optical scanner



FIG. 1 is a front view;

FIG. 2 is a rear view;

FIG. 3 is a top view;

FIG. 4 is a bottom view;

FIG. 5 is a righthand side view;

FIG. 6 is a lefthand side view; and,

FIG. 7 is a perspective view, on a reduced scale. 

The ornamental design for an optical scanner, as shown. 